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Reports calls to <code>StringBuffer</code> and <code>StringBuilder</code> constructors with <code>char</code> as the argument.
In this case, <code>char</code> is silently cast to an integer and interpreted as the initial capacity of the buffer.
<p><b>Example:</b></p>
<pre><code>
  new StringBuilder('(').append("1").append(')');
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>
  new StringBuilder("(").append("1").append(')');
</code></pre>
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